https://www.1stdibs.com/furniture/lighting/chandeliers-pendant-lights/large-carlo-nason-three-shade-pulegoso-glass-pendant-lamp-italy-1960/id-f_20368562/ 

Vray | corona

Turbosmooth open

Those who work in V-Ray versions lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR ( GGX ), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - whichever suits you best

For Corona render, it is recommended to install a version of at least 1.5, since the glossiness of materials is configured taking into account PBR